Pain (reader x various) naruto fanfiction

it was cold and dark in the village hidden in the leaves.
a little girl was lying inside a secluded room in the konoha village waiting for questioning she was afraid and scared, but more , she was disgusted in herself ,she massacred her whole village and everyone in it. she was remembering how it all started.
FLASH BACK______
''ya, know you shouldn't over work yourself Yu, its bad for you, you could really hurt yourself'' . A young boy about the age of 5 with blonde orangey ,hair brown eyes and white clothes, is currently being carried by a girl with [h/l] ,[h/c]. her name is [y/n]. She was carrying the boy Yu back to the village hidden in the moon.'' but, I need to get stronger I need to get stronger to surpass you, [y/n]!''. '' if you keep it up you'll end up dead''. the boy looked down thinking of a way he could convince the said girl that he needs to become stronger, to surpass her. Yu looked up to [y/n] because of her strength and determination and kindness. He wanted to become...